CN101278673A - Herbicides special for flax and method of preparing the same - Google Patents

Abstract

A special flax weedicide and a preparation method thereof belong to the chemical medicine and production technology. The weedicide consists of isooctyl 2-methyl-4-chloro, quizalofop-ethyl, bromoxynil octanoate, emulsifier and dimethylbenzene solution. Partial dimethylbenzene solution is injected into a reaction kettle, all quizalofop-ethyl and bromoxynil octanoate are sequentially poured into the reaction kettle under the state of stirring to be stirred; after the quizalofop-ethyl and the bromoxynil octanoate are solved, all isooctyl 2-methyl-4-chloro and emulsifier and the rest dimethylbenzene solution are poured into the reaction kettle to be stirred and then a sample is taken for analyzing, if the sample is eligible, the preparation is obtained. The weedicide has the characteristics of wide weed control spectrum, low cost, high efficiency of killing weeds, improving the yield of the flax, ensuring economic benefit and simple preparation method.

Description

Herbicides special for flax and preparation method thereof

Technical field

The invention belongs to chemicals and technology of preparing, relate generally to a weeding pesticide and a method of manufacturing technology thereof that grows flax the crop special use.

Background technology

Single, double cotyledon weeds mix and give birth between flax field, and kind is many, quantity is big, and harm is serious.Identify flax field weed in the Heilongjiang Province twenties kinds of tens sections are arranged.The flax straw that annual crop smothering causes, the seed underproduction be all at 15-20%, serious plot even can't gather in the crops and have no harvest.Therefore, the flax field weeding is an important step in flax field management.Flax is a flat planting dense planting crop, in every square metre of area effectively about several 1500 strains of strain, and weeding by machine's difficulty, and chemical weed control work efficiency height, cost are low, reduce labor intensity, and welcome by the peasant.But, the weed killer herbicide improper use also can occur herbicidal effect poor, to when the stubble and succession crop have problems such as poisoning and residual contamination.At present, the weed killer herbicide of flax field weeding mainly is that all that, Sethoxydin, fluazifop-p-butyl, Bentazon, methoxone, green sulphur are grand etc.These weed killer herbicides are used on flax, though effectively preventing the weeds of flax field, also in various degree exist various deficiencies, as the Sethoxydin that kills monocotyledon weed, fluazifop-p-butyl, all you etc., mostly be the import agricultural chemicals, the cost height; The methoxone of killing broadleaf weed often causes poisoning to flax poor stability, seriously influences flax quality and yield; Green sulphur is grand to flax safety, but succession crop is caused serious residual poisoning, as serious, cause large-area loss to residual poisoning such as corn, beet, potato, tomato, round onions, muskmelon, watermelon, capsicum, eggplant, Chinese cabbage, radish, carrot, cabbage, wild cabbage, cucumber; Bentazon is to flax safety, and to succession crop noresidue poisoning, yet consumption is big, the cost height.

Summary of the invention

Purpose of the present invention is exactly problem and the defective that exists at above-mentioned prior art, design provides herbicides special for flax of a kind of new formulation and preparation method thereof, reaches low production cost, broad weed-killing spectrum, does not have to flax safety, assurance and raising flax yield and quality, to succession crop that poisoning is residual, the easy purpose of manufacture method.

The object of the present invention is achieved like this:

1, herbicides special for flax, this agent is made of the different monooctyl ester of the methoxone that accounts for gross weight 22 ± 1.2%, 5 ± 1.5% Quizalotop-ethyl, 18 ± 1.2% bromoxynil octanoate, 8% emulsifier and 47 ± 1.5% xylene solvent compatibility.

2, above-mentioned herbicides special for flax preparation method is: the xylene solvent that will account for xylene solvent gross weight 95% earlier injects in the reactor, under stirring, successively whole Quizalotop-ethyls and bromoxynil octanoate are put in the same reactor, stirred 30 minutes; After Quizalotop-ethyl and bromoxynil octanoate dissolve fully, successively the xylene solvent of the different monooctyl ester of whole methoxone and emulsifier and surplus is rendered in the aforesaid reaction vessel again, continue to stir after 30 minutes, sample analysis can dispatch from the factory after qualified in can.

The present invention is the weeding complex preparation of being made up of the single agent of three kinds of weedings of the different monooctyl ester of methoxone, Quizalotop-ethyl, bromoxynil octanoate of flax field special use, make on the developed basis of former single-dose product advantage and strong point, its deficiency and defective are effectively remedied, improved the safe period of using, reduce cost, enlarged and killed the grass spectrum, reduce single agent consumption, preventive effect is good, and obviously improved the preventive effect of antagonism weeds, and hold effect suitably, a dispenser can be controlled weeds in the time of infertility, to succession crop noresidue poisoning, its preparation process is simple.

Embodiment

Give an actual example below embodiment of the present invention is described in detail.

Take by weighing 20.8 kilograms the different monooctyl ester of methoxone, 6.5 kilograms Quizalotop-ethyl, 19.2 kilograms bromoxynil octanoate, 8 kilograms emulsifier and 45.5 kilograms xylene solution respectively, amount to 100 kilograms of raw material for standby, the percentage that each composition accounts for gross weight is followed successively by 20.8%, 6.5%, 19.2%, 8% and 45.5%.During preparation, earlier with 45.5 kilograms 95% xylene solvent, promptly 43.225 kilograms of xylene solutions inject in the reactor, under stirring, successively 6.5 kilograms of Quizalotop-ethyls and 19.2 kilograms of bromoxynil octanoates are put in the same reactor, stir 30 minutes after Quizalotop-ethyl and bromoxynil octanoate dissolve fully, again successively with 20.8 kilograms of different monooctyl esters of methoxone and 8 kilograms of emulsifier, and remaining 2.275 kilograms of xylene solutions are put in the previous reaction still, continue to stir after 30 minutes, sample analysis promptly gets the herbicides special for flax can after qualified and dispatches from the factory.

In this herbicides special for flax control project indicator, moisture is 0.5%, and the pH value scope is 6.0-8.0, and emulsion stability when diluting 200 times, 0 ± 2 ℃ and 7d low-temperature stability and 54 ± 2 ℃ and 7d heat storage stability are all qualified.

The different monooctyl ester chemical name of methoxone in the herbicides special for flax is the different monooctyl ester of methoxone, biologically active: weeding; The Quizalotop-ethyl chemical name is (RS)-2-[4-(6-chloro-2-quinoxaline base oxo) phenoxy group] ethyl propionate, biologically active: weeding; The bromoxynil octanoate chemical name is 3.5-two bromo-4-decoyl oxygen benzonitriles, biologically active: weeding.This herbicides special for flax can be prevented and kill off annual and perennial weeds such as lamb's-quarters, amaranth, knotweed, piemarker, acalypha copperleaf, kitchen garden, Siberian cocklebur, shepherd's purse, rule grass, denticulate ixeris herb, thorn dish, corn-bind, Commelina communis, black nightshade, field bindweed, corn sow thistle, barnyard grass grass, green foxtail, lady's-grass, eleusine indica, wild oat, lolium temulentum, millet genus, two fringe bromegrass, reed effectively.In a large amount of scientific experiments, this herbicides special for flax preventing weeding weeds effect is remarkable: 1, broad weed-killing spectrum: once can effectively prevent and kill off annual and perennial single, double cotyledon weeds with this medicine in the flax field, 30 days weeds strain preventive effects are 94.09% after the medication, to suppress preventive effect be 81.96%, and comparison improves 22.96% and 46.70% according to medicament respectively.2, cost is low: this medicament is applied to flax field and purchases 6.5 yuan of expensess for medicine, and contrast medicament mu is purchased 8.9 yuan of expensess for medicine, and this medicament is applied to flax field can be reduced and purchase medicine cost 26.97%; 3, to flax safety: the sub-district in 4 years, wide field trial result show that when mu consumption 50-80ML, flax growth is normal, does not have any symptom of chemical damage; 4, to succession crop noresidue poisoning: three kinds of active ingredients are the noresidue medicament in this medicament, each active ingredient very fast in degraded in soil in its compound formulation, do not influence soil property, have good interior absorption and selectivity simultaneously, residual shorter in plant corpus, no any residual influence is done in the back; 5, efficient: flax field was with behind this medicament three days, and broadleaf weed begins death, and monocotyledon weed began death in seven days, did not have weeds substantially in 10 days flax fields; 6, volume increase: flax field increases production 26.53% and 39.58% with the weeding of this medicament, its former stem, seed production respectively than not weeding field, and former stem and seed production are than improving 12.28% and 33.41% with conventional dose weeding field amount of increase in production; 7, economic benefit is big: flax field increases income 179.11 yuan with its agriculture output value of this medicament weeding than not weeding field, increases income 106.80 yuan than conventional dose weeding flax field.

Claims (3)

1, a kind of herbicides special for flax is characterized in that this agent is made of the different monooctyl ester of the methoxone that accounts for gross weight 22 ± 1.2%, 5 ± 1.5% Quizalotop-ethyl, 18 ± 1.2% bromoxynil octanoate, 8% emulsifier and 47 ± 1.5% xylene solvent compatibility.

2, a kind of herbicides special for flax preparation method as claimed in claim 1, it is characterized in that the xylene solvent that will account for xylene solvent gross weight 95% earlier injects in the reactor, under stirring, successively whole Quizalotop-ethyls and bromoxynil octanoate are put in the same reactor, stirred 30 minutes; After Quizalotop-ethyl and bromoxynil octanoate dissolve fully, successively the xylene solvent of the different monooctyl ester of whole methoxone and emulsifier and surplus is rendered in the aforesaid reaction vessel again, continue to stir after 30 minutes, sample analysis can dispatch from the factory after qualified in can.

3, herbicides special for flax according to claim 1 is characterized in that comprising in 8% the emulsifier 6% phenethyl phenol polyoxyethylene polyoxypropylene ether and 2% calcium dodecyl benzene sulfonate.